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By Price B. D, Staunton W. P

The Mineral Science Laboratory of the Government Chemical Laboratories has recently investigated various procedures for the analysis of the platinum group metals (PGMs). This investigation covered a number of methods for the extraction and preconcentration'of the PGMs from a wide range of geological materials. The nickel sulphide extraction technique proved to be overall the most applicable procedure. Flame atomic absorption spectroscopy (FAAS), electrothermal atomisation atomic absorption spectroscopy (ETA-AAS), inductively coupled plasma atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS) were examined for their suitability in analysing platinum group metals in solution. ETA-AAS and ICP-MS proved to be the instruments of choice due to their low detection limits.

Jan 1, 1987

By Burchell S, McGregor K

The process of design, measurement and review is essential if blasting is to continuously improve to meet the increasing productivity goals of most mining operations. To achieve continual improvements, many operators are turning to contractors to provide the necessary technology. Under this arrangement, the contractor becomes the supplier of a service rather than products and assumes some of the risks associated with blasting by guaranteeing the end result. If contractors are to obtain significant productivity improvements they must continuously improve every aspect of their business.

Jan 1, 1994

By Wencai X

The conversion relationship between the Bond Work Index W1, specific output of mill and the energy efficiency of grinding were developed using dimensional analysis. These relationships were validated and the value of the conversion coefficient ~ was also obtained using a new installed device for measuring grindability of ores. With the new simulating algorithm the mill specifications, output and size distribution of grinding products of industrial mills can be calculated based on laboratory measured results. This algorithm is more accurate and simpler than any of the other empirical relationships. KEYWORDS: Conversion coefficient method, grindability, grinding Constant.

Jan 1, 1993

The Western Australian Mineral Sands Industry has tried a number of different mining methods to efficiently exploit the potentially very large reserves of mineral sands in this state.The size of the operation, the location, the type and composition of the orebody contribute towards the choice of current mining techniques.The methods applied to these areas are described as well as reference made to other techniques which will . make possible the exploitation of lower grade reserves.

Jan 1, 1986

This paper provides an overview of current and future mine developments in the major island nations Indonesia, Papua New Guinea (PNG), New Zealand, and Fiji, and the French territory of New Caledonia. Many of the other 11 small island nations in the region, such as Vanuatu, Pulau and the Solomons have been the subject of considerable exploration orientated towards gold in the past few years but without any deposit found with confirmed economic viability.

Jan 1, 1990

Modelling of Magnetic Carrier Separation Process Using Computational Fluid Dynamics

Sep 13, 2010

The mining activities on the North Mine leases have, over the years, followed the orebody from the shallower depths at the southern end of the lease as it continued northwards at progressively increasing depths.Commencing from the south end, in the early days small shafts were used to obtain access to the orebody at the moderate depths involved.

Jan 1, 1957

Twenty years of effort in developing the use of computers in the design and control of mineral treatment circuits has resulted in a sound base for future widespread application of the techniques.. The intent of this paper is to speculate to some extent about future applications of computer related techniques in the mineral extraction industries. The use of simulation methods for the analysis and design of circuits is discussed. In the area of process control, computers have been largely devoted to process monitoring and reporting tasks. The application of computers for the total control and optimization of complete plants is considered. Finally, the role of computer based modelling studies for definitions of optimum treatment flowsheets is suggested.

Jan 1, 1985

The term æindustrial mineralsÆ covers a wide range of minerals, from diamonds to silica sand, which are fundamental to the sustainability of a wide range of industries, from drilling mud to autocatalysts. The paper commences with an overview of the industrial minerals markets, with particular reference to the characteristics that impact on the development of a successful marketing strategy. This is followed by the identification of the steps to be taken in the negotiation and execution of an industrial minerals sales contract, from identification of the appropriate product through negotiation of the contract to ongoing customer relations. An understanding of your customerÆs business is fundamental to a mutually successful long-term relationship with that customer. The paper concludes with an overview of the techniques and approaches through which such a relationship may be achieved and maintained.

Jan 1, 2006

There has been a significant increase in exploration and development of mineral wealth in South East Asia over the past five years. This paper describes the foreign investment laws in the region as they relate to the mining industry.

Jan 1, 1993

By Ribicic M, Kocar F

Surface lakes or water accumulation present a possible threat for the flooding of the underground mining works. Therefore, the criteria that define the conditions under which no flooding of the mining works can occur are of vital interest to the miners. The authors present the criteria that they developed for the Velenje lignite mine, Yugoslavia, and that take into account the elastoplastic behaviour of the rocks and the natural stresses involved in the deformable strata between the bottom of the lakes and the mine works as well as the extent of the direct caving-in process resulting from longwall mining activity. Fi- nally a generalization of these criteria to the other rock and stress conditions is discussed.

Jan 1, 1988

The rare earths market is relatively small and slow growing. Three applications using mainly cerics rare earths : catalysts, glass-ceramics and metallurgy are volume market. Inside this slow moving frame, fast growing niches can be found lamp phosphors, permanent magnets, fine cera- mics... There is no specific ore for one given element, and the natural occurence of any ele- ment is almost constant in both monazite and basnaesite. This creates the "balance problem" that consists in the best compromise between shortage and over production. The general trend of prices is downward in constant money. Despite this difficult environment (price decrease, technology changes, etc...) lots of company have always been attrac- ted by the rare earth business.

Jan 1, 1986

By L Gladysiewicz

This paper deals with the current situation in the mining industry in Poland. An overview of typical transport systems working in the different branches of mining is provided. The transport systems currently used in lignite mining, particularly in the Belchat=w mine û the largest brown coal mine in Poland, and those operating in copper mines are described in detail. New designs of belt conveyors used in underground hard coal and copper mining are presented.

Jan 1, 2003

By Hongzhen Yu, Xiaoping Ma, Jiansheng Qian

The paper introduces the design of an Intelligent Managerial Attendance Machine (IMAM) for coal mines. In the system, data communication is carried by Optical fiber communication, including industrial control computer on the ground and the car

Jan 1, 1998

The three main types of iron ore deposits in Australia are bedded, massive and residual. Some character- istics of iron ore, important in its process behaviour, are related to its mineralogy which is a result of its geological history. World iron ore resources are extremely large but there are problems in quantifying re- serves, defined as that part of re- sources from which a useable commodity can be extracted economically. The relationship between the discovery and exploitation of iron ore resources and the process of industrialization is examined in historical and present day contexts.

Jan 1, 1976

The Elgas Underground Storage Facility at Port Botany, Sydney, is the first purpose-built cavern of its kind in Australia and provides large capacity, safe and environmentally benign storage of Liquefied Petroleum Gas (LPG). The facility will provide Elgas with the flexibility to source product at competitive prices and ensure long-term security of supply. Construction has provided Orica Australia, formerly ICI Explosives, with a unique opportunity to provide a bulk explosive delivery system specifically designed to meet the exacting demands of the site and of the project.

Jan 1, 1999

The complicated mining-geological conditions in the Kuzbass have led to some difficult mining situations in the past. Now, with historical data, supplemented by geomechanical information and measurements, together with an appropriate kinematic theory, a more reliable basis exists for prediction and control of the geomechanical state during extraction, with caving and with backfilling. Continued progress and improving reliability comes from data banks and computations, and now prediction of geomechanical situations is upgraded by more routing measurements and monitoring. Not only in the Kuzbass, but throughout the USSR, 14 dedicated groups are ready to solve various specific problems of prediction an control of geomechanic situations with assured increase in the quality of mining.

Jan 1, 1991

A three-dimensional finite element analysis is used to determine the stress intensity factors associated with the chevron-notched semi-circular bend test specimen. The stress intensity factor calibration is done over a range of crack lengths a

Jan 1, 1998

The discovery of magmatic nickel sulfide mineralisation within the Musgrave Block of Central Australia, in a region which has received virtually no exploration since the early 1970s, promoted a pegging rush throughout the region and provided a significant boost to the investor interest in resources sector companies. The discovery proved a significant success for the application of generic models for major magmatic nickel-copper sulfide deposits. The entry of junior explorers to the region is the principal mechanism by which the region will be explored, although significant social and physical challenges will impact on the ability of explorers to maintain investor confidence in the region.

Jan 1, 2002

By Lu Fujun, Chen Xuewei

This paper will analyse the cause-effect relationship of the main factors influencing the production of the fully-mechanised coalface by mainly using the basic system dynamics theory. On the basics of the analysis, the simulated model of the sy

Jan 1, 1998